<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>四分屏页面</title>
    <style>
        body {
            margin: 0;
            padding: 0;
            height: 100vh;
            width: 100vw;
            overflow: hidden;
        }
        .container {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .row {
            display: flex;
            height: 50%;
            width: 100%;
        }
        .iframe-container {
            width: 50%;
            height: 100%;
            border: 1px solid #ccc;
            box-sizing: border-box;
        }
        iframe {
            width: 100%;
            height: 100%;
            border: none;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="row">
            <div class="iframe-container">
                <iframe id="f1" src="http://shadow-pc/dbshop/public"></iframe>
            </div>
            <div class="iframe-container">
                <iframe id="f2" src="http://shadow-pc/dbshop/public/admin"></iframe>
            </div>
        </div>
        <div class="row">
            <div class="iframe-container">
                <iframe id="f3" src="https://www.bilibili.com"></iframe>
            </div>
            <div class="iframe-container">
                <iframe id="f4" src="https://www.runoob.com/"></iframe>
            </div>
        </div>
    </div>
</body>
</html>